Morningstar has an atmosphere and surface of Earth-like conditions due to terraforming efforts by the stellar corporations. It has an atmosphere breathable by humans, but also contains large zethane deposits underneath its crust.

Morningstar Prime is home to billions of humans, many of whom are descendants of the Crayven colonists. The capital of Morningstar Prime is New Darwin City, and other notable cities include Victoria City and Newstone.